Assigkno r



June l0. 1924.

J. M. SCHUTZ SUCTION AIE CLEANER Filed Jun@ 2O 1921 3 Sheets-Sheet 1June 10, 1924. 1,496,908

J. M. scHuTz SUCT I ON A IR CLEANER Filed June 20. 1921 3 Sheets-Sheet 2June 1o. 1924. 1396,908

J. M. SCHUTZ SUCTION AIR CLEANER 3 Sheets-Shes t 5 Filed June 20. 1

,ingrl to the exhaust sind the intake. l

Patented June 10, 1924.

UNITS'LE lSTATES PATENT OFFICE.

JOSEPH M. SCHUTZ, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE SSIGNMENTS,TO STBOMBERG MOTOR DEVICES COMPANY, OF CHICAGO, ILLINOIS, A. CORPORATIONOF ILLINOIS.

sUc'ioN Am CLEANER Application filed June 20, 1921. Serial No. 478,872.A

To flwhom it muy concern.'

Be it known that I, .Tosnrn M. SCHUTZ,- a citizen ol" the United States,and resident of Chicago, in the county of Cook and State of Illinois,have invented certain new and useful Improvements in n Suction Air(lleaner, of `which the following is n specification, i

My invention relates to improvements in methods `and means forseparating materials .from a gaseous carrier and has special reff erence`to improvements lin air cleaners and Vthe methods for eliminating dustfrom the nir before it enters the `carburetors `of internal combustionengines.

The object of my invention is to produce a device for this purpose whichshall be so constructed-or made as to arated from the air, being againpicked up by the nir; which shall be so simple in its construction thatthe manufacturing cost shall be a practical minimum; und which shallreadily be attachable to conduits lead- Another feature of irnportancerelates to the construction of the tangential inlet pasi sageswhich I employ, the arrangement being such that I :un enabled to produceztring,

ot' tangential passages in an exceedingly sim ple und inexpensive mannerand4 to provide :in-effective inlet guard screen for the inletsl lnaddition to the above many other advantageous results are obtained b andare embodied in. the particular embo iment of my invention ashereinafter described and particularly pointed out in the appendedclaims.

My invention v'vill be more readily understood by reference to theaccompanying drawings formingr and in which 7Figure l is a fragmentaryside elevation of an internal combustion engine equipped with an aircleaner mode in accordance with my invention; n Y

Figure 2 is atop plan vien. of the air cleaner; i

Figure 3 is a vertical, central, sectional View ofthe air cleaner on theline 3-3 of Figure 2;

Figure 4 is a horizontal gvctionat view' on the line 4-4 of Figure 3;

Figure 5 is a bottom plat View of fhg upper cover memberpreclude `thepossivlnhty of any dust which `has once been seppart of thisspecification Figule is :i top plan view of the lower cover member;

Figure 7 is an enlarged fragmentary see tional view similar to Figure 4of a joint or connection in the lower part of the air separator;

Figure 8 is a fragmentary, vertical, central, 'sectional view p'rticularly showing, the depending dust. disch rgge nozzle and thevertically arranged ejector;

Figure 9 is a vertical sectional view on the line 7 7 of Figure 3showing,r the con meeting pipe `clamped in position; and

Figure i0 is a horizontal sectional view of the sheet met-al connection,at the lower` end 8 8 o'f Figure 8.

This present invention is un improvement 1i pon my 'invention asdisclosed and claimed in my co-pending application, suction air cleaner,filed in the United States Patent Otlicc. November 19, i920. Serial No.425.073.

In said drawings, 1 represents an internal combustion engine of ordinarydesign having n suction intake 2 and an exhaust conduit 3. My improvedsuction air cleaner is designated,generally by4. It is provided with ocentral. outlet 5 at its upper end adapted to be connectedI to theintake (i of a suitablecarburetor 7 which is interposed between thesuction nir cleaner and the in take 2 of the engine. The air cleaner 4is yadapted to remove the dust from the ltir upper end of the casing 9is conncrml ro a head or cover device 11 which I piovnle with a,plurality of tangential inlet fmssziges 12 around its circumference.This head or cover member 11 is made up of a lower ring member 13 and anupper or cover member 14. The lower member 13 has ay large caentraflopening 15 which receives the oppor end of the casing 9 and is providede if er. annular internal groove 1G into which the unpcr part of thecasing 9 is forni. to rc- {q'in these two members rigidly lingethen this ltr-vcr member is in ring form and rw :mi

` drawing of the air at this point.

- tangential inlet passages 12.

and clamped. isop Yfrom the ring are V-shap'ed projections 17 which arebest shown in Figure 6 and. which cooperate with similar shapedprojections 18 depending from the cover member 14 to form the pluralityof tan ential inlet pas- 12.. The upper mem er 14 has a central openin19 for receiving a de n diug outlet mem er 2,0 which is provide with asuitable flange 21 for securing the outlet member upon the covcr member14 by bolts 22. This outlet member is usually provided with an elbowpart 23 for connection to the intake of' the carburetor. The two members13 and 14 are adapted to be rigidly connected to each other in their proer relative itions by bolts 24 extending own to the projections 18 andthru the lower ring 13.

As the inletA passages are 'of relatively large size being in the deviceshown in the drawings approximately of an inch wide and one inch high,VI rovide a iardsurrounding the tangentia `row of in ets to prevent thedrawing inrof large objects such as leaves, straws, etc., which mightclog the interionopenings of the' device.

This guard 2 is in the form of a ring of sheet metal which is rovidedwith a great many relatively small) holes 26 thru which the air canreadily enter and pass thru the The holes 26 are siiicent in number to'prevent iuy wire pref erably make the guard 25 of spherical form asshown 1 provide ample space between the guarcgand the projections 17 and18 forming the inlet passages l2 to permit the entcrngrar to dow freelto the inlet passa o hold the guar 25 in its position, I provide themembers 13 and 14 with ann'u lar oves and 28V at their outer edges andadjacent to the faces of the projections 17 and 18 forming `annularshoulders 29 between which the guard ring 25 is received In assemblingthe several members of the head member 11, the lower ring 18 having beensecured to the cylindrical casing, the guard ring 25 is .then

pelaced in position and the upper cover mem.

r 14 is then placed in position within the guard ring and with itsprojections 18 alternating between Athe projections 17 on the lower ringand then the cover members are clamped tightlv together with the bolts24 securing the mcmber14 upon the member 1,3 and serving to permanentlyhold the guard ring 25 in l-osition without other fastening means,Preferably the nozzle 20 projects through the cover member ll andextends down a short. distance into the u per end 'of the chamber 9, sothat the incoming streams of air through the tangential inlets must assdownwardly into the chamber' 9 in or er to escape through the centraloutlet at the top.

The hopper or conical bottom 10 of the chamber 9 ends at its lower endin a straight or cylindrical neck 30 and the free end of ,this neck isformed into an outturned narrow flange 31 for the purpose of connectinga suitable discharge nozzle to the lowerend of the hopper.

As the air is drawn into the device by the suction of the engine throughthe tangential inlets 12, the several streams entering in through theseinlets are caused to w irl with high velocity upon the cylin-v dricalsurface of the casing and are forced downwardly in the casing to theconical bottoin carrying all dust and other materials which the air mabe carrying with it down to thebottom o the chamberwhere I arra e meansfor preventing the picking up of t e dust again as the air travels tothe center of the chamber and rises thru the chamber to the outlet. Thismeans comprises a conical baille wall 32 which is arranged centrallywithin the conical hop er 10 and which is supported upon a cy indricalwall 33 referably formed integral therewith exten ing down through theneck 30 of the hopper l'and of a smaller diameter providing a narrowcylindrical channel-like annular s ace 34 between the neck 30 and thecylin rical wall 33 into which the dust, carried down the surface 10 bythe whirling airl is forced.

-s best shown in Figure 3, the wall 33 is longer than the neck 30 andthe upper end 35 thereof rises higher in the conical hopper than thejuncture of the conical hopper 10 and the neck 30 and the u per part 0ithe wall 3 3 thereby forms a ba e to prevent the carrying inwardly ofthe dust which is forced own the conical wall by the whirling air andcausing such-'dust to be .forced down to the bottom of the channel 34.The wall 33 is supported u on a horizontal flange 37`which is in theorin of an annular flange extendin end of the wal 33 and preferably'formed inte rally therewith, the outer diameter of the ange 37 beingsubstantially the same as the. llangc 31 on the lower end of the neck30. j Y

In the completed structure these flanges are clamped tightly together bymeans of the up r edge 38 'of a smaller conical def livery opper 39which the hopper 10. The upper ed e 38 thereof is adapted to be formedtight y around the outer ripheries of the two flanges'l and 37 as stshown in Figure 7.

The conical hopper 39`forms end of a depending delivery nozzle 40 w hasa substantially parallel portion 41 immediately belowv the hopper 89 andwhich cal delivery nozzle, 42 small delivery This nozzle 42 iis extendsdown below than r .ends below the parallel ort'ion 41 in a coni.

1 .mosca j an ejectxgii, the-edler member being; l'orincd i rangedsubstantially in the by a sheet nietnlrcasing 44 surrounding the IOZZlcund iadptedfito be mounted rigidly relatively thereto-and having anozzle 45 adapted to be connected with the pipe u lor receivingpressure' from the exhaust pipe of the engine. The using 44 is providedwith u dow; vardly cxlenilinff delivery nozzle 4l] which us,` best shownin Figure is runde in the forni of :i Venturi tube, having an elongatedconical part 47 :it its lower end and a shorter conical part 48 at itsupper end, the neck 4!) of the venturi being arv lane of the outletopening 43 of the nozz e 42 and below the side connection 45 whereby thegases under pressure which enter the sidV connection from the exhaustipe escape through the Venturi 'tube past t e lower end of the dischargeopening 43 and produce an exceedingly strong suction at this point.

To permit the collected dust to enter into the device below the bafflingmember 32 l provide circumferentially extending discharge slots 50 inthe 'flan e 37 and at the i bottoni of the ring-like co ection space 34.The action of the air in the collector is to drive the dust down throngi these openings and as fast as it is driven down to the. lower part ofthe device, it is drawn out through the discharge opening 43 by thesuction Set` up in the discharge nozzle 40 by means of the exhaust gaseswhich escape through the Venturi tube.

An important feature of my invention rc y lates to the fact that it isnon-clogging in cally depending nozzle 42 its operation. Once the dusthas been cepu` it finds no horizontal support, shelf or projection uponwhich to accumulate. The projection of the dust through the slots in thedividing baille, is in a downward direction through the verti- V to theoutlet opening 43, there the dust is caught by the strong ysuctionproduced by the ejector and is driven downwardly through the expandingnozzle. 4.7.

The connection 44 is preferably made of sheet metal and as best shown inFigures R and 9, l preferably make it of two parts or halves 51 andL'Z,the dividing plane between the two parts being a longitudinal centralpince in order lo arrange this connection so that it can be readilyclamped upon thrrylindricalrportion 4l of the discharge nozzle and uponthe end of the pipe S, l provide flat parallel flanges 54 and 55 on theparts 51 and 52 respectively in the angle between the parallel portion41 of the connection 49 and which flanges are adapted to be clam dtightly together by bolts 56 and 57. T e' bolt 56 clamps the connectionaround the parallel portion 4l of the discharge nozzle andthe bolt 57clamps the rated from the air extending from cud lo end.r

.former method. Furthermore nozzle and thel lock-earned together' asShown :it 58, .This

consi ruction lends itself to the production of thil connection nt a lowcost ont of sheet nictul by the usual stamping processes.

'l'hc construction of the upper end of the device l'orniinpy thelungi-nihil inlets by providing a lernuting cooperating. projections onthe menioers 13 und i4 greatly facili trates the production of fl'iesctangential openinge` for tht` reason that the projectioneA on euch ofthese members: ure vso f-ir apart that they cnn be readily usualmolding, casting or die-casting 1- roc` isses and they can be readilysmoothed up or finished oli account of the wide spaces between theprojections on the individual members. In fact, in the preferred nivnnerof production of the device, there is very little machine work as themembers 14 and 15 are preferably dic-cast and the other parte of thedevice arr` made out of sheet metal. The low cost :it which the devicecan be produced ii: quantities results in a greatly extended field ofuse'.

In apruclicul sense the pulsations of the suction ol1 the nir throughthe carburetor to the cylinders of the engine are opposed bythepulsu'iom` produced in the duet. discharge opening by 1hr successivedischargcs of ille exhaust gases from the cylii'idere und conscqui-nllythe suc! ion I 'iulsalions of the n ir cannot client or produce alifting of the dust which han been seperated from the uil' by thecentrifugal action in the sepan-:lling chamber, with the result thatsubstantially 100% of the dust is removed from fhe'air.

rlhe forni of dust ejector which l have shown und drsrrihed possessesadvantages which are unattainable by the use ofthe forni of ejectorheretofore in common use, viz: the forro in which the lurssuru issupplied through the central smaller tubo instead of surrmunling thistube as l have an ranged it.

produced by the` produced at ihencck ennllled to produce :l suctionpressure in the dust delivery lube which is from six lo ten times `riorethan could be produced by the by this arr genient l nin enabled toproduce, by means of the exhaust, a Stronger suction for the ductdelivery cud of thi cleanerithan iS prod iced at the air delivery end bythe suction of the cylinders. This stronger suction or lower vacuum"pressure Vassists 1n preventing the clean air picking up the SeparatedMy device is exceedingly simple in construction and installation andonce installed '-1 w-if-*ically no attention whateoerer,

of the venturi, a'm" tending alternately from the dust beingcontinuously discharged fromv the collection chamber'and the air assmgfree of dust through the carburetor into the intake of the en ine.

As many mo ilications bf my invention will rend il y suggest themselvesto one ski lcd in the :ii-f, I do not limit or confine invention to thespecific details of construction herein shown and described,

I claim:

1. In a device of the kind described, a head comprising two opposedmembers, the head having an annular-series of tangential inlet openingsbetween said members, the .circum fereniial defining walls of saidopenings exsaid'two members as and for the purpose specified.

*2. In n device of the kind described, a sheet metal casing having asubstantially cylin dricn! portion open at one end, a ring mem bersecured to said end, a cover member o substantially equal externaldiameter with 1h ring membriI secured tosame and sp therefrom,projections on the ring member extending into contact with the coverinember, and alternately arran pmiections on the cover member exten ingLzito contact with the ringr einher, said pro'ections cir conferentie]yspaced apart an adapted to forni tangential inlet onins between same.

3. in a device ofthe 'nd ascribed, a dust Separation chamber havin a'conical bottom ending into' a cylindrica outlet, a guard mem 4r in theform of il closed topped cylinder of smallerdiameter in said outlet, theupoper end of the cylindrical wall .rising a ve the cylindrical wall ofthe outlet o said conical bottom thus forming a radial balle.

4. In a device of the kind described, a dust separation chamber havingtangential inlets at its up .r rnd and a central outlet at its upper ena conical bottom at its lower end, the onical bottom ending in acylindrical outlet, a concentric cylindrical closed topped baille in theoutlet providing a narrow circumferential space between the cylindricaloutlet andthe baille, and circumferential discharge outlets at the lowerend of said ace through which, the -separated materia is ado ted to bedriven to a position beneath the ame.

5.. In a dust se eration device, a chamber having iangentia inlets atits upper endend havin a central air outlet at its upper end,v a conicadischarge nozzle for the dust at its lower end, a perforatedballlefbetween its ends through which the sepilated dust is driven bythe whirlngair, and a Venturi tube surrounding the discharge nozzle,means forsupplying gas under pressure t6 the 'Venturi tu above saidnozzle to reduce a strong suction through the nozz e for removing dustthrough same. l g

6. In a device of ,the kind`deecrib'ed, a

f which the dust is pro'ected by sheet metal connection in the generalform of a T connection, the connection comprisin two sheet metal partsjoined on a longitu inal medial plane passing thru all three ends of theconnection by lock neamdjoints, said connection provided with opposeparts adapted to be clamped together by bolts for closing two of theends of the connection upon cylindrical members as and for the purposespecified.

7.3ln a device of the. kind 'deseribed, a duet separating chamber, adepending dust discharge nozzle therefor and a vertically arrangedejector tube surrounding the discharge nozzle and having a dependingdief charge nozzle. Y

8. In a device of the kind described, a centrifugal dust separatingchamber having a suction outlet at its upper end, said chamber having aconical lower and down the centrifin the lower @al action a slott whichthe part of the chamber through dust isz-projected, an elongatedvertically disposed conical dust outlet nozzle' below the baille, and apressure ejector surrounding thel outlet for producing a suctiontherein. y

9. .In a centrifugal separator, a substantially central air outlet atthe up r end, e. ring of tangential inlets surroun ing the outlet,a'conical Ylower ond de ndin'g from the rin of inlets, a substantie lykhorizontal baille cEJsing the lower end of t .e cone, the

Ybaille having dust esca o enin at its outer edge, a cylindricalewall)risrgis in the chamber within said openings, an means connected with thecone below, said baille for removin the dust therefrom.

l0.V In a evice of the kind described, a conical dust' collectingchamber, the lower part thereof having a cylindrical portion terminatingin a conical npzzle, a sheet metal Venturi tube connection memberadapted to be secured to said delivery nozzle andadalpted to be clampedto the said cy lindrica portion thereof, seid connection. having e splitcylindrical 'u per end provided with outwardly exten ing flanges at thesplit to be bolted together to clamp the connection in place, saidconnection formed with a side opening immediately below the upperflanged end and adapted to be clamped Aiipona connecting pipe forsupplying gas url der ressiii'c to sai venturi` said flanges being ormedlo receive clamping bolts for this purpose. i. t

1l. In av device of the kind described,` a dust separation chamberhaving a suction outlet at its upper end for aix-.and a suction outletat the lower end for dust, the dust suction outlet depending vertically,a venturi below the dust outlet in substantially axial alii-lementtherewith the delivery end of the dust outlet being smaller than unilterminating at, the neck ol' the venturi, und nur-uns for supplying lultfun luulvx' pressure lo Ille upper end 0f the wnturi ne und for thepurpose specified.

l2. ln u lust separation device, a circular chamber having u tangentialinlet. at its upper ein] for dust laden air and having,r an nir outlet:1t its ,upper end, a conical discharge for the dust :it its lower enel`n perfor-nte baille between its ends through which the separated dust isdriven by the whirling air, a Venturi tube surrounding the dischargenozzle, means for supplying gas under pressure to the Venturi tube abovethe outlet of said nozzle to produce a strong suction through the nozzlefor removing the dust through same.

13. In :ildevice of the kind described. a chamber having a tangentialinlet at its upper end for (lust lullen air and having un uil' outlet:it its upper end` a vertical rrlcpciub ing liwlmrgc nozzle for the.duel :it ilu lower mul of .suid chunilu-r. u Venturi tube sun rounding.Quill nozzle. nwum` for uplilying hol uns miller pressure to Suidventuri to lli-ul. nhl nozzle :nul to muse u strong suction through thcnozzle, :is uml for the purpose Spi-willed.

ll. ln

:i centrifugal separator, a substantially central air outlet at theupper cnil, a ring.r ot' tangential inlets surrounding the ourlet, aconical lower end depend-- ing from the ring of inlets, ending in nsubstantially cylindrical lower end, :i baille Wall closing said`cylindrical part, said batl'le having n ring of dust escape openingsadjacent to its edge, a cylindrical wall rising within said ring' ofopenings and extending from the baille to, n point above the upper enflof said cylindrical part, and means connected with the cylindrical partbelow said baille for removing the dust from the device.

15, In a device of the kind described, a dust separation chamber havinga tangential inlet at its uper end for dust laden air and having an outetal: its upper end, the cl1amber having a conical bottomtcrminating ina discharge nozzle, a pressure chamber surrounding thc nozzle, thepressure chamher having an annular outlet, surrounding the discharge endof the nozzle, and means for forcing hol: gases inlo anfl through thechamber and through said annular outlet.

Si ned alJ ('hirugo. lllinoi;A this fUtlrday of h y, 1921.

JOSEPH MA SCHUTZ.

